68.36% is the change from 493 to 830
Calculation steps:
[( 830 - 493 ) ÷ 493] x 100 = 68.36%
Formula
Percentage change = [(830 - 493) / 493] x 100
Subtract the new number by the original number
830 - 493 = 337
337 ÷ 493 = 0.6835699797160243
0.6835699797160243 x 100 = 68.36%